Tire inflating valve



June 2 9, 1943.

a PAYNE TIRE INFLATING 'v'ALvE Filed; April '9, 1942 '2 Sheets-Sheet -1 June 29,1943. E. PAYNE 2,323,237

TIRE INFLATING VALVE Patented June 29, 1943 UNITED snares PATENT orFices-I rrnnmrm rmevanvn Y Ernest Payne, Repton, Ky. Application Aprilfi, 1942, Serial No. 438,336

'1 Claim. (01. 137-695) This invention pertains to tire inflating valves of a generally similar nature to that constituting the subject matter of my copending application Serial No. 423,839, filed on December .20, 1941, now Patent No. 2,306,495, granted Decem ber 29, 1942, upon which the present device constitutes an improvement.

An important object of the present invention is to provide a tire inflating valve of the aforementioned character which includes unique means for automatically lowering the air pressure in the tire in the event of over-inflation, thus preventing blowouts in addition to promoting riding comfort and safety.

Other objects of the invention are to provide a tire inflating valve of the character set forth which will be simple in construction, compact, highly eflicient and reliable, and which may be produced at low cost.

The foregoing and other objects of the invention will become apparent from a study of the following specification, taken in connection with the accompanying drawings wherein like characters of reference designate corresponding parts throughout the several views, and wherein:

Figure 1 is a view in vertical section through an embodiment of the improved valve.

Figure 2 is a top plan view thereof.

Figure 3 is a view in horizontal section, taken substantially on the line 3-3 of Figure 1.

Figure 4 is a view in vertical section through another embodiment of the valve.

Figure 5 is a vertical sectional view through still another modification.

Figure 6 is a view in horizontal section, taken substantially on the line 66 of Figure 5.

Referring now to the drawings in detail, and to Figures 1 to 3, inclusive, thereof in particular, it will be seen that reference numeral I designates generally a tubular metallic casing. The casing I comprises comparatively large and small upper and lower portions 2 and 3, respectively. At substantially the point where the portions 2 and 3 merge, the casing I has formed therein a shoulder 4. At an intermediate point, the upper portion 2 of the casing I is internally reduced and formed to provide a seat 5.

Threadedly mounted for adjustment in the upper portion of the casing I is a removable plug 6 having a centrally located opening I extending therethrough. The plug 6 comprises a reduced lower end portion 8 having a flange 9 on its lower end providing a shoulder ID. This is illustrated to advantage in Figure 1 of the drawings.

Operable below the plug 6 in the upper portion 2 of the casing I i s an-annu1ar channel member constitutinga relief valve II having mounted in its lowerportion afsealiri'g ring ,I2 of rubber or other suitable material which is! en: gageable on the seat 5. Also mounted in ,the lower portion of the annular. relief valve IL is a resilient seat I3 of rubber or other suitable material which is concentric with the sealing ring I2. Rising from the relief valveII is a ring I4 which slidably encircles the reduced lower. portion 8 of the plug 6 with the flange 9 there-. on. At its upper end, the ring I4. is provided with an internal'notchedflange I5 whichisen gageable with the shoulderv III for connecting the relief valve II to the-plug 6. ,A coil spring I5 is provided between .theplug Itandti-1e channelshaped relief valve for engaging the sealing ring I2- on the seat .5. .'The flange-9 extends; downwardly-from the'plug ,6;in a manner'to en;- circle and retain the'upper; end-of the coil;- spring I6.

Also mounted in the casing I is a core Ill. The core II- includes a stem I8 which is operable in the passage I in the plug 6 and which extends downwardly through the annular, substantially channel-shaped relief valve II. On the lower end of the stem I8 is aninflating valve member I9 in the form of a disc having thereon an upstanding beveled ring 20 which is engageable with the seat I3. Depending from the inflating valve member I9 and slidably engaged in the reduced lower portion 3 of the casing I is a guide 2I of substantially cross-shaped horizontal section. Encircling the guide 2| and resting on the shoulder 4 is a coil spring 22. The upper end of the coil spring 22 is engaged beneath the inflating valve member I9 for pressing the ring 20 upwardly toward the seat I3. Fingers 2'3 connect the coil spring 22 to the guide 2I.

The stem I8 comprises an upper portion 24 constituting a guide of substantially cross-shaped horizontal section which is slidable in the passage I of the plug 6. On the upper end of the guide 24 are outwardly bent lugs 25 which are engageable with the plug 6 for lifting the core I! out of the casing I with said plug when it is removed.

In operation, the nozzle of a conventional air hose is engaged in the customary manner with the upper end of the casing I and the stem I8 is forced downwardly against the tension of the spring 22 for disengaging the ring 20 from the seat I3, thu opening the valve member I9 for inflating the tire. Of course, when th air hose is removed, the inflating valve member I9 is immediately closed again by the spring 22. Should the pressure of the air in the tire be suflicient to overcome the tension of the coil spring I6, the relief valve II is raised out of engagement with the seat 5 for permitting th escape of the excess air upwardly around the ring I4, then downwardly around the reduced portion 8 of the plug 6, and then upwardly through the passage or opening I in said plug. When the tire has thus been sufliciently deflated, the coil spring I 6 closes the relief valve II .on the seat 5. The tension of the coil spring I6 may be regulated as desired by adjusting the plug 6 in the casing I. When the plug 6 is removed from the casin I, the flange 8 engages the flang I5 and said plug engages the lugs 25 for picking up the entire relief valve and core assemblies for removing themin the one operation.

In the embodiment shown in Figure 4 of the drawings, a coil spring 26 which encircles the Stfim I8 has itslower .end engaged on the substantially channeleshaped relief valve II and its upperend engaged beneath the guide 24 for closing the ring element 20 ofthe inflating valve IS onthe seat I3. Thus, the elements 2|, 22 and 23 are omitted. In other respects, this form of the device is substantially similar in construction and operation to the .embodimentillustrated in Figures 1, 2 and 3 of the drawings.

in the modification illustrated in Figures 5 and 6 of the "drawings, the annular, substantially channel-shaped relief valve I I has formed there in a seat in the form of 2. depending, beveled ring 21. Then, the inflating valve member I9 is formed to provide ,anannular channel 28 having mounted therein a resilient sealin ring 29 of rubber or other suitable material whichis engageable with the seat 2'l. In other respects this modification is substantially similar in construction and operation to the e bodimentshown in Figure '4 of the drawings.

It is believed that the many advantages of an improved tire inflating valve constructed in accordance with the present invention will be readily understood, and although preferred embodiments of the device are as illustrated and de scribed, it will be understood that changes in the details of construction and in the combination and arrangement of parts may be resorted to which will fall within the scope of the invention as claimed.

What is claimed is:

A tire inflating valve comprising a tubular casing, a seat in said casing, a removable plug, having an opening therein, threadedly mounted for adjustment in the casing, said plug including a reduced lower end portion and an external flange on said lower end portion, an annular, substantially channel-shaped relief valve member operable in the casing and engageable with the seat, a ring on said relief valve member rotatably and slidably encircling the reduced end portion of the plug, an internal, notched flange on the ring engageable with the first named flange for connecting said relief valve member to said plug for removal therewith from the casing after an initial independent movement of said plug, a coil spring between the plug and the relief valve member for yieldingly engaging said relief valve member with the seat, a seat in the annular relief valve member, a. stem extending through said annular relief valve member, a guide on one end of the stem operable in the plug, an inflating valve member on the other end of the stem engageable with the second-named seat, and a coil spring encircling the stern and having oneend engaged with the relief valve member and its other end engaged with the guide for engaging the inflating valve member with thesecondnamed seat.

ERNEST PAYNE, 

